CVE-2017-12092

Name of the Vulnerable Software and Affected Versions Allen Bradley Micrologix 1400 Series B FRN versions 21.2 and before

Description A file write issue exists in the memory module functionality, allowing a specially crafted packet to cause a file write, resulting in a new program being written to the memory module. An attacker can send an unauthenticated packet to trigger this issue.

Recommendations For Allen Bradley Micrologix 1400 Series B FRN versions 21.2 and before, consider restricting access to the memory module functionality until a fix is available. As a temporary workaround, implement additional authentication measures to prevent unauthenticated packets from triggering the file write issue.